Rename test module to testenv and update references

Preparation to move current Test class into its own module test from
suite module.

Change-Id: I520bd046cb09042b5567d967f951f050e4e02e85
diff --git a/suites/aoip_smpp/esme_connect_policy_closed.py b/suites/aoip_smpp/esme_connect_policy_closed.py
index 29b25d1..79cb0c7 100755
--- a/suites/aoip_smpp/esme_connect_policy_closed.py
+++ b/suites/aoip_smpp/esme_connect_policy_closed.py
@@ -6,7 +6,7 @@
 # * SMPP interface of SMSC rejects ESMEs with known system id but wrong password.
 # * SMPP interface of SMSC rejects ESEMs with unknown system id
 
-from osmo_gsm_tester.test import *
+from osmo_gsm_tester.testenv import *
 
 SMPP_ESME_RINVPASWD = 0x0000000E
 SMPP_ESME_RINVSYSID = 0x0000000F